Crown 30W Megaphone Siren, Whistle and Voice Recorder with Bluetooth USB/SD Aux In Range 35 Meters 230 x 350mm without Batteries 8pcs Type C SR-999 UBExperience clear and powerful sound with the Crown 30W Megaphone Siren & Whistle. Deliver your message effectively up to 35 meters away, making it ideal for crowd control, outdoor events, and emergencies. Compact and lightweight at 230 x 355mm, it offers easy handling without batteries, giving you flexibility with power options. Packaged with 8 Type C units, this megaphone ensures reliable performance whenever you need it. Elevate your communication